brw_vs_surface_state.c revision 20952f0378247f69849b6e37a7374bc9c94437a0
1fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod/* 2fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod Copyright (C) Intel Corp. 2006. All Rights Reserved. 3fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to 4fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod develop this 3D driver. 5fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 6fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod Permission is hereby granted, free of charge, to any person obtaining 7fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod a copy of this software and associated documentation files (the 8fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod "Software"), to deal in the Software without restriction, including 9fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod without limitation the rights to use, copy, modify, merge, publish, 10fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod distribute, sublicense, and/or sell copies of the Software, and to 11fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod permit persons to whom the Software is furnished to do so, subject to 12fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod the following conditions: 13fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 14fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod The above copyright notice and this permission notice (including the 15fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod next paragraph) shall be included in all copies or substantial 16fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod portions of the Software. 17fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 18fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 26fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod **********************************************************************/ 27fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod /* 28fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * Authors: 29fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * Keith Whitwell <keith@tungstengraphics.com> 30fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod */ 31fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 32fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "main/mtypes.h" 33fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "main/texstore.h" 34fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "shader/prog_parameter.h" 35fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 36fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "brw_context.h" 37ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod#include "brw_state.h" 38ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod 39ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod/* Creates a new VS constant buffer reflecting the current VS program's 40fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * constants, if needed by the VS program. 41fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 42fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * Otherwise, constants go through the CURBEs using the brw_constant_buffer 43fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * state atom. 44fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod */ 45fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbodstatic drm_intel_bo * 46fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbodbrw_vs_update_constant_buffer(struct brw_context *brw) 47ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod{ 48ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod struct intel_context *intel = &brw->intel; 49ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod struct brw_vertex_program *vp = 50fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod (struct brw_vertex_program *) brw->vertex_program; 51fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 52fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod const int size = params->NumParameters * 4 * sizeof(GLfloat); 53fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod drm_intel_bo *const_buffer; 54fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod int i; 55 56 /* BRW_NEW_VERTEX_PROGRAM */ 57 if (!vp->use_const_buffer) 58 return NULL; 59 60 const_buffer = drm_intel_bo_alloc(intel->bufmgr, "vp_const_buffer", 61 size, 64); 62 63 /* _NEW_PROGRAM_CONSTANTS */ 64 65 /* Updates the ParamaterValues[i] pointers for all parameters of the 66 * basic type of PROGRAM_STATE_VAR. 67 */ 68 _mesa_load_state_parameters(&brw->intel.ctx, vp->program.Base.Parameters); 69 70 drm_intel_gem_bo_map_gtt(const_buffer); 71 for (i = 0; i < params->NumParameters; i++) { 72 memcpy(const_buffer->virtual + i * 4 * sizeof(float), 73 params->ParameterValues[i], 74 4 * sizeof(float)); 75 } 76 drm_intel_gem_bo_unmap_gtt(const_buffer); 77 78 return const_buffer; 79} 80 81/** 82 * Update the surface state for a VS constant buffer. 83 * 84 * Sets brw->vs.surf_bo[surf] and brw->vp->const_buffer. 85 */ 86static void 87brw_update_vs_constant_surface( GLcontext *ctx, 88 GLuint surf) 89{ 90 struct brw_context *brw = brw_context(ctx); 91 struct brw_surface_key key; 92 struct brw_vertex_program *vp = 93 (struct brw_vertex_program *) brw->vertex_program; 94 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 95 96 assert(surf == 0); 97 98 /* If we're in this state update atom, we need to update VS constants, so 99 * free the old buffer and create a new one for the new contents. 100 */ 101 dri_bo_unreference(vp->const_buffer); 102 vp->const_buffer = brw_vs_update_constant_buffer(brw); 103 104 /* If there's no constant buffer, then no surface BO is needed to point at 105 * it. 106 */ 107 if (vp->const_buffer == NULL) { 108 drm_intel_bo_unreference(brw->vs.surf_bo[surf]); 109 brw->vs.surf_bo[surf] = NULL; 110 return; 111 } 112 113 memset(&key, 0, sizeof(key)); 114 115 key.format = MESA_FORMAT_RGBA_FLOAT32; 116 key.internal_format = GL_RGBA; 117 key.bo = vp->const_buffer; 118 key.depthmode = GL_NONE; 119 key.pitch = params->NumParameters; 120 key.width = params->NumParameters; 121 key.height = 1; 122 key.depth = 1; 123 key.cpp = 16; 124 125 /* 126 printf("%s:\n", __FUNCTION__); 127 printf(" width %d height %d depth %d cpp %d pitch %d\n", 128 key.width, key.height, key.depth, key.cpp, key.pitch); 129 */ 130 131 drm_intel_bo_unreference(brw->vs.surf_bo[surf]); 132 brw->vs.surf_bo[surf] = brw_search_cache(&brw->surface_cache, 133 BRW_SS_SURFACE, 134 &key, sizeof(key), 135 &key.bo, 1, 136 NULL); 137 if (brw->vs.surf_bo[surf] == NULL) { 138 brw->vs.surf_bo[surf] = brw_create_constant_surface(brw, &key); 139 } 140} 141 142 143/** 144 * Constructs the binding table for the VS surface state. 145 */ 146static dri_bo * 147brw_vs_get_binding_table(struct brw_context *brw) 148{ 149 dri_bo *bind_bo; 150 151 bind_bo = brw_search_cache(&brw->surface_cache, BRW_SS_SURF_BIND, 152 NULL, 0, 153 brw->vs.surf_bo, BRW_VS_MAX_SURF, 154 NULL); 155 156 if (bind_bo == NULL) { 157 GLuint data_size = BRW_VS_MAX_SURF * sizeof(GLuint); 158 uint32_t data[BRW_VS_MAX_SURF]; 159 int i; 160 161 for (i = 0; i < BRW_VS_MAX_SURF; i++) 162 if (brw->vs.surf_bo[i]) 163 data[i] = brw->vs.surf_bo[i]->offset; 164 else 165 data[i] = 0; 166 167 bind_bo = brw_upload_cache( &brw->surface_cache, BRW_SS_SURF_BIND, 168 NULL, 0, 169 brw->vs.surf_bo, BRW_VS_MAX_SURF, 170 data, data_size); 171 172 /* Emit binding table relocations to surface state */ 173 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 174 if (brw->vs.surf_bo[i] != NULL) { 175 /* The presumed offsets were set in the data values for 176 * brw_upload_cache. 177 */ 178 drm_intel_bo_emit_reloc(bind_bo, i * 4, 179 brw->vs.surf_bo[i], 0, 180 I915_GEM_DOMAIN_INSTRUCTION, 0); 181 } 182 } 183 } 184 185 return bind_bo; 186} 187 188/** 189 * Vertex shader surfaces (constant buffer). 190 * 191 * This consumes the state updates for the constant buffer needing 192 * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and 193 * CACHE_NEW_SURF_BIND for the binding table upload. 194 */ 195static void prepare_vs_surfaces(struct brw_context *brw ) 196{ 197 GLcontext *ctx = &brw->intel.ctx; 198 int i; 199 int nr_surfaces = 0; 200 201 brw_update_vs_constant_surface(ctx, SURF_INDEX_VERT_CONST_BUFFER); 202 203 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 204 if (brw->vs.surf_bo[i] != NULL) { 205 nr_surfaces = i + 1; 206 } 207 } 208 209 if (brw->vs.nr_surfaces != nr_surfaces) { 210 brw->state.dirty.brw |= BRW_NEW_NR_VS_SURFACES; 211 brw->vs.nr_surfaces = nr_surfaces; 212 } 213 214 /* Note that we don't end up updating the bind_bo if we don't have a 215 * surface to be pointing at. This should be relatively harmless, as it 216 * just slightly increases our working set size. 217 */ 218 if (brw->vs.nr_surfaces != 0) { 219 dri_bo_unreference(brw->vs.bind_bo); 220 brw->vs.bind_bo = brw_vs_get_binding_table(brw); 221 } 222} 223 224const struct brw_tracked_state brw_vs_surfaces = { 225 .dirty = { 226 .mesa = (_NEW_PROGRAM_CONSTANTS), 227 .brw = (BRW_NEW_VERTEX_PROGRAM), 228 .cache = 0 229 }, 230 .prepare = prepare_vs_surfaces, 231}; 232 233 234 235